When should I plant Slnečnica in Zone 12a?

Start Slnečnica seeds indoors around Dec 11. Transplant outdoors after Jan 8. Expect first harvest around Mar 14.

What is the last frost date for Zone 12a?

The average last spring frost date for Zone 12a is Jan 1. The first fall frost averages Dec 31, giving a 364-day growing season.

Can I grow Slnečnica in Zone 12a?

Yes. Slnečnica needs 90 days to harvest. Zone 12a has a 364-day growing season, which is sufficient. You can plant up to 19 successions.

🌻

🌻 Growing Slnečnica in Zone 12a

Zone 12a has a year-round growing season. Slnečnica can be planted almost any time with proper planning. Posledný mráz: Jan 1. Prvý mráz: Dec 31.

Planting Calendar

Indoor

Outdoor

Harvest

Dec 11Dec 31

Season: Jan 1 – Dec 31 (364 dní) · Succession: plant every 2 weeks (up to 19x)

Zóna12a

Posledný mrázJan 1

Prvý mrázDec 31

Sezóna364 dní

Úroda90 dní

SlnkoPlné Slnko

When to Plant Slnečnica in Zone 12a

Start Seeds Indoors: Dec 11

Start Slnečnica seeds indoors around Dec 11 (3 týždňov pred posledným mrazom). Optimal germination temperature: 75F. Germinates in 7-14 days.

Transplant Outdoors: Jan 8

Transplant Slnečnica seedlings outdoors after Jan 8. Wait until soil temperature reaches 55F. Space plants at 1/m² (30cm rozostup). Harden off plants for a week before moving outside.

Harvest: Mar 14

First harvest approximately Mar 14 (~65 dní from transplant). Continue harvesting until first frost (Dec 31).

Sprievodné Sadenie

✅ Uhorky✅ Tekvica ✅ Kukurica✅ Fazuľa

❌ Zemiaky

Slnečnica in Other Zones

1a 1b 2a 2b 3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a 9b 10a 10b 11a 11b 12a 12b 13a 13b

Plan Your Garden Slnečnica

Track Slnečnica from seed to harvest with personalized frost dates, watering recommendations, and companion planting visualization.

Start Free Slnečnica Growing Guide